Latch for sliding doors.



No. 687,922. Patented Del 3, I90l. W. K. KAYE.

LATCH FORSLIDING DOORS.

(Application filed Apr. 30, 1901.)

(No Model.)

E if:

wlwsssejz A rr-omvg-rs PATET WALTER KELITA KAYE, OF LEEDS, ENGLAND.

LATCH FOR SLIDING DOORS.

SPECIFICATION forming part of Letters Patent No. 687,922, dated December3, 1901. Application filed April 30, 1901. Serial No. 58,144. (Nomodel.)

To all whom it may concern.-

Be it known that I, WALTER KELITA KAYE, a subject of the King of GreatBritain and Ireland, whose postal address is South Ac commodation road,Leeds, in the county of York, England, have invented certain new anduseful Improvements in and Relating to Locks or Latches for SlidingDoors, (for which application for provisional protection has been madein Great Britain, numbered 7,087, dated April 4:, 1901,) of which thefollowing is a specification.

The invention consistsin the features and combinations ofpartshereinafter described, and particularly pointed out in the claim.

In describing my invention in detail reference is made to theaccompanying sheets of drawings, in which Figure 1 represents a frontview of a casing, showing one of the handles in its normal position.Fig. 2 is a front elevation of another casing, fitted with a lock orlatch bolt. Figs. 3 and 4 are fore-end views of the striking-plate andlock or latch plate casings, respectively. Fig. 5 is a view showing theinterior of the two casings with the lock or latch bolt of one casingengaged with the face or fore end of the other casing.

In carrying out my invention I secure to a sliding door a casing A,which may be termed the striking-plate casing, through which passesaspindle B,preferably square,and supported in a manner as hereinafterdescribed, and on either or both ends of said spindle outside the casingA is attached a handle 0, by which the spindle B may be operated to someextent in a rotary direction. The square spindle B passes through asquare hole formed in the boss of a two-armed lever D and D madecircular at D on each side of the boss for supporting the said lever inthe walls of casing A in such a manner that the spindle and lever may beturned in an axial direction. The lever-arms D and D are arranged at asuitable angle to each other, and the lever is held in a normal positionby placing between the lever-arm D and fixed flanged support E aguiding-spindle F, provided with an expanded and conical end F, betweenwhich and the flanged support E is a compressed spiral spring G, appliedfor the purpose of keeping the lever-arm D below or clear of the lock orlatch bolt opening A, formed in the face or fore end of thestriking-plate casing, as shown by Fig. 5.

To the door-frame or standing pillar of the ordinary description isfixed what I term a lock or latch casing I-I, provided with a lock orlatch bolt J, supported on a stud K as fulcrum and of such length thatone end of the said boltprotrudes beyond the fore end of said casing,and held in its normal position, as shown by Fig. 5, by a spiral springL, mounted on a guiding-spindle N, provided with an expandedconical-pointed end N,

between which and the stop or flange P the said spring is compressed.

By mounting and holding the lock or latch bolt J in the position shownand forming the end J of said bolt at an inclination to the face or foreend of the striking-plate casing A on closing the sliding door, theinclined end J of lock or latch bolt on coming in contact with thebottom edge of opening A, formed in the face or fore end ofstriking-plate casing A, causes the end J of said bolt to be raised, soas to enter the before-mentioned opening A. i The compressed spring L,acting on the lock or latch bolt J, depresses the same in the directionfor the hook end to automatically engage with the fore end of thestriking the door, as shown by arrow in Fig. 1, the

spindle B is turned to some extent onits axis, and the lever-arm Dbrought into contact with the hook end J of lock or latch bolt J in amanner so as to raise same clear of the bottom of opening A in the faceor fore end of easing A, thereby releasing the fastening and allowingthe door to he slid in the direction of pressure applied to a handle 0.On closing the door, by applying pressure to a handle 0 in the directionopposite to that shown by the arrow in Fig. 1 it will be evident thelever within the casing A will remain, as shown, in its normal position,thus allowing the end J of lock or latch bolt J to enter the opening Athrough the face or fore end I D said support E being engaged by the armof easing A. D, substantially as described. 10

What I claim as my invention is- In witness whereof I have hereunto setmy In combination with a pivoted latch-bolt J, hand in the presence oftwo witnesses.

a spring for pressing the same, a pivoted le- WALTER KELITA KAYE.

ver having an arm D to engage the latch and Vitnesses:

a second arm D a support E and a spring WM. PREST,

interposed between said support and the arm CLIFFORD SPEIGHT.

